Pith Number

pith:H6SQD7KD

pith:2009:H6SQD7KDYLULEGGFDO22KWIKWV

not attested not anchored not stored refs pending

Arc spaces and equivariant cohomology

Alan Stapledon, Dave Anderson

arxiv:0910.2316 v2 · 2009-10-13 · math.AG

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{H6SQD7KDYLULEGGFDO22KWIKWV}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T02:58:58.180621Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3fa501fd43c2e8b218c51bb5a5590ab576c93d4fe417bb10cf79bc962dd0099c

Aliases

arxiv: 0910.2316 · arxiv_version: 0910.2316v2 · doi: 10.48550/arxiv.0910.2316 · pith_short_12: H6SQD7KDYLUL · pith_short_16: H6SQD7KDYLULEGGF · pith_short_8: H6SQD7KD

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/H6SQD7KDYLULEGGFDO22KWIKWV \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 3fa501fd43c2e8b218c51bb5a5590ab576c93d4fe417bb10cf79bc962dd0099c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f160b1ae27ca7dfbb47b0c219bc63147d7c763df9eda2300e46753f5656d04fe",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2009-10-13T06:39:01Z",
    "title_canon_sha256": "e06a14c68fe5fe3f90032713499dd0585c18abff07e287b557294ae42b3c0b79"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.2316",
    "kind": "arxiv",
    "version": 2
  }
}